Great subs. I find that cold sub places around campus tend to be very mediocre (looking at you, Jimmy John's), but Silver Mine does them well. Putting them above the crowd, however, is certainly the avocado spread, which pairs well with many of their sandwiches.
The prices are reasonable to a little high, but the free wifi is easy to access and very reliable, making this a regular stop for me if I don't want to go all the way down to Green.